Gradual rigidity leaf spring has variable rigidity feature, that causes little or nearly no change on offset frequency.
渐变刚度钢板弹簧具有刚度可变的特性，可使偏频变化很小或接近等频特性。
Gradual rigidity leaf spring has variable rigidity feature, that causes little or nearly no change on offset frequency.
渐变刚度钢板弹簧具有刚度可变的特性，可使偏频变化很小或接近等频特性。
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